<template>
<div class="count">
        <h1>{{count}}</h1>
        <button @click='add'>累加</button>
</div>

</template>

<script>
export default {
    name:'MyCount',
    data(){
        return{
            count:0
        }
    },
    methods:{
        add(){
            this.count++
        }
    }
}
</script>

<style>
    .count{
        background-color: aquamarine;
        height: 100px;
    }
</style>